Answer:
I would say he became because at one point he wasnt corrupt. even if it was just in his early childhood it is still something. at one point he had to have changed
Freight train . Sorry if I’m wrong
Australia underwent a population boom because:
Australia was under the British 'empire' during the time. When the British prisons became overcrowded, many of them were shipped to Australia to live there. This increased the amount of people living in Australia exponentially, and eventually cities were founded
hope this helps